106778473693 has 4 divisors (see below), whose sum is σ = 109050356160. Its totient is φ = 104506591228.

The previous prime is 106778473691. The next prime is 106778473723. The reversal of 106778473693 is 396374877601.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 396374877601 = 1097 ⋅361326233.

It is a cyclic number.

It is not a de Polignac number, because 106778473693 - 2¹ = 106778473691 is a prime.

It is a super-3 number, since 3×106778473693³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (106778473691) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1135941163 + ... + 1135941256.

It is an arithmetic number, because the mean of its divisors is an integer number (27262589040).

Almost surely, 2^106778473693 is an apocalyptic number.

It is an amenable number.

106778473693 is a deficient number, since it is larger than the sum of its proper divisors (2271882467).

106778473693 is an equidigital number, since it uses as much as digits as its factorization.

106778473693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2271882466.

The product of its (nonzero) digits is 32006016, while the sum is 61.

The spelling of 106778473693 in words is "one hundred six billion, seven hundred seventy-eight million, four hundred seventy-three thousand, six hundred ninety-three".